# GLMakie: Reactive legends no longer work with ComputeGraph

**URL:** <https://discourse.julialang.org/t/glmakie-reactive-legends-no-longer-work-with-computegraph/132272>\
**Category:** Visualization\
**Tags:** plotting, glmakie\
**Created:** [September 11, 2025, 5:45am UTC](https://discourse.julialang.org/t/glmakie-reactive-legends-no-longer-work-with-computegraph/132272 "2025-09-11T05:45:43Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![matthew3245](https://avatars.discourse-cdn.com/v4/letter/m/ba8739/32.png) [@matthew3245](https://discourse.julialang.org/u/matthew3245)\
**Post date:** [September 11, 2025, 5:45am UTC](https://discourse.julialang.org/t/glmakie-reactive-legends-no-longer-work-with-computegraph/132272/1 "2025-09-11T05:45:43Z")

</div>

I’m trying to have a textbox that the user can type in that adds a prefix to the start of legend entries. Here is a minimum working example:

```julia
using GLMakie

fig = Figure()
ax = Axis(fig[1:2, 1])
textbox = Textbox(fig[3, 1], placeholder="prefix", tellwidth=false, tellheight=false)
labels = [@lift($(textbox.displayed_string) * ": 1"), @lift($(textbox.displayed_string) * ": 2")]
series!(ax, [1, 2, 3], [2 4 8; 1 3 1]; labels)
axislegend(ax)
display(fig)

```

This code works as expected in GLMakie 0.12.0, but doesn’t work in the latest 0.13.6 version. I’m guessing it has something to do with the new ComputeGraph architecture but I’m not sure. Any help is greatly appreciated!

The error I get in 0.13.6 is shown below:

```julia
ERROR: LoadError: deepcopy of Modules not supported
Stacktrace:
   [1] error(s::String)
     @ Base ./error.jl:35
   [2] deepcopy_internal(x::Module, stackdict::IdDict{Any, Any})
     @ Base ./deepcopy.jl:36
   [3] deepcopy_internal(x::Any, stackdict::IdDict{Any, Any})
     @ Base ./deepcopy.jl:82

...
...
 [600] get_observable!
     @ ~/.julia/packages/ComputePipeline/03tW7/src/ComputePipeline.jl:265 [inlined]
 [601] get_observable!(c::ComputePipeline.Computed; use_deepcopy::Bool)
     @ ComputePipeline ~/.julia/packages/ComputePipeline/03tW7/src/ComputePipeline.jl:289
 [602] get_observable!
     @ ~/.julia/packages/ComputePipeline/03tW7/src/ComputePipeline.jl:286 [inlined]
 [603] #400
     @ ~/.julia/packages/Makie/4JW9B/src/scenes.jl:186 [inlined]
 [604] map
     @ ./tuple.jl:355 [inlined]
 [605] #map!#399
     @ ~/.julia/packages/Makie/4JW9B/src/scenes.jl:186 [inlined]
 [606] map!
     @ ~/.julia/packages/Makie/4JW9B/src/scenes.jl:181 [inlined]
 [607] map(::Makie.var"#2883#2891"{Int64}, ::Union{Scene, Plot}, ::ComputePipeline.Computed; ignore_equal_values::Bool, priority::Int64)
     @ Makie ~/.julia/packages/Makie/4JW9B/src/scenes.jl:201
 [608] map(::Makie.var"#2883#2891"{Int64}, ::Union{Scene, Plot}, ::ComputePipeline.Computed)
     @ Makie ~/.julia/packages/Makie/4JW9B/src/scenes.jl:195
 [609] plot!(plot::Series{Tuple{Vector{Vector{Point{2, Float64}}}}})
     @ Makie ~/.julia/packages/Makie/4JW9B/src/basic_recipes/series.jl:85
 [610] connect_plot!(parent::Scene, plot::Series{Tuple{Vector{Vector{Point{2, Float64}}}}})
     @ Makie ~/.julia/packages/Makie/4JW9B/src/compute-plots.jl:807
 [611] plot!
     @ ~/.julia/packages/Makie/4JW9B/src/interfaces.jl:211 [inlined]
 [612] plot!(ax::Axis, plot::Series{Tuple{Vector{Vector{Point{2, Float64}}}}})
     @ Makie ~/.julia/packages/Makie/4JW9B/src/figureplotting.jl:431
 [613] _create_plot!(::Function, ::Dict{Symbol, Any}, ::Axis, ::Vector{Int64}, ::Vararg{Any})
     @ Makie ~/.julia/packages/Makie/4JW9B/src/figureplotting.jl:401
 [614] series!(::Axis, ::Vararg{Any}; kw::@Kwargs{labels::Vector{Observable{String}}})
     @ Makie ~/.julia/packages/Makie/4JW9B/src/recipes.jl:521
 [615] top-level scope
     @ ~/gnc_tools/master/test3.jl:7
 [616] include(fname::String)
     @ Main ./sysimg.jl:38

```

---

<div class="post-metadata">

**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://discourse.julialang.org/u/jules)\
**Post date:** [September 11, 2025, 6:43am UTC](https://discourse.julialang.org/t/glmakie-reactive-legends-no-longer-work-with-computegraph/132272/2 "2025-09-11T06:43:56Z")

</div>

Do you mind opening an issue with this so it’s tracked better?

---

<div class="post-metadata">

**Author:** ![matthew3245](https://avatars.discourse-cdn.com/v4/letter/m/ba8739/32.png) [@matthew3245](https://discourse.julialang.org/u/matthew3245)\
**Post date:** [September 11, 2025, 6:51am UTC](https://discourse.julialang.org/t/glmakie-reactive-legends-no-longer-work-with-computegraph/132272/3 "2025-09-11T06:51:40Z")

</div>

Yes no problem, here is the issue:

> <https://github.com/MakieOrg/Makie.jl/issues/5295>
>
> \- \[x\] what version of Makie are you running? (0.13.6)
> \- \[x\] can you reproduce th…e bug with a fresh environment ? (Yes)
> \- \[x\] What platform + GPU are you on? (Ubuntu 22.04, Nvidia RTX 2000 Ada)
> \- \[x\] Which backend are you using? (GLMakie)
> \- \[x\] Please provide an minimal example of the failing code. If the problem is with the visualization, please provide a picture or video of it.
> 
> I'm trying to have a textbox that the user can type in that adds a prefix to the start of legend entries. Here is a minimum working example:
> 
> \`\`\`julia
> using GLMakie
> 
> fig = Figure()
> ax = Axis(fig\[1:2, 1\])
> textbox = Textbox(fig\[3, 1\], placeholder="prefix", tellwidth=false, tellheight=false)
> labels = \[@lift($(textbox.displayed\_string) \* ": 1"), @lift($(textbox.displayed\_string) \* ": 2")\]
> series!(ax, \[1, 2, 3\], \[2 4 8; 1 3 1\]; labels)
> axislegend(ax)
> display(fig)
> \`\`\`
> 
> This code works as expected in GLMakie 0.12.0, but doesn't work in the latest 0.13.6 version. I'm guessing it has something to do with the new ComputeGraph architecture but I'm not sure. Any help is greatly appreciated!
> 
> The error I get in 0.13.6 is shown below:
> 
> \`\`\`julia
> ERROR: LoadError: deepcopy of Modules not supported
> Stacktrace:
> \[1\] error(s::String)
> @ Base ./error.jl:35
> \[2\] deepcopy\_internal(x::Module, stackdict::IdDict{Any, Any})
> @ Base ./deepcopy.jl:36
> \[3\] deepcopy\_internal(x::Any, stackdict::IdDict{Any, Any})
> @ Base ./deepcopy.jl:82
> 
> ...
> ...
> \[600\] get\_observable!
> @ ~/.julia/packages/ComputePipeline/03tW7/src/ComputePipeline.jl:265 \[inlined\]
> \[601\] get\_observable!(c::ComputePipeline.Computed; use\_deepcopy::Bool)
> @ ComputePipeline ~/.julia/packages/ComputePipeline/03tW7/src/ComputePipeline.jl:289
> \[602\] get\_observable!
> @ ~/.julia/packages/ComputePipeline/03tW7/src/ComputePipeline.jl:286 \[inlined\]
> \[603\] #400
> @ ~/.julia/packages/Makie/4JW9B/src/scenes.jl:186 \[inlined\]
> \[604\] map
> @ ./tuple.jl:355 \[inlined\]
> \[605\] #map!#399
> @ ~/.julia/packages/Makie/4JW9B/src/scenes.jl:186 \[inlined\]
> \[606\] map!
> @ ~/.julia/packages/Makie/4JW9B/src/scenes.jl:181 \[inlined\]
> \[607\] map(::Makie.var"#2883#2891"{Int64}, ::Union{Scene, Plot}, ::ComputePipeline.Computed; ignore\_equal\_values::Bool, priority::Int64)
> @ Makie ~/.julia/packages/Makie/4JW9B/src/scenes.jl:201
> \[608\] map(::Makie.var"#2883#2891"{Int64}, ::Union{Scene, Plot}, ::ComputePipeline.Computed)
> @ Makie ~/.julia/packages/Makie/4JW9B/src/scenes.jl:195
> \[609\] plot!(plot::Series{Tuple{Vector{Vector{Point{2, Float64}}}}})
> @ Makie ~/.julia/packages/Makie/4JW9B/src/basic\_recipes/series.jl:85
> \[610\] connect\_plot!(parent::Scene, plot::Series{Tuple{Vector{Vector{Point{2, Float64}}}}})
> @ Makie ~/.julia/packages/Makie/4JW9B/src/compute-plots.jl:807
> \[611\] plot!
> @ ~/.julia/packages/Makie/4JW9B/src/interfaces.jl:211 \[inlined\]
> \[612\] plot!(ax::Axis, plot::Series{Tuple{Vector{Vector{Point{2, Float64}}}}})
> @ Makie ~/.julia/packages/Makie/4JW9B/src/figureplotting.jl:431
> \[613\] \_create\_plot!(::Function, ::Dict{Symbol, Any}, ::Axis, ::Vector{Int64}, ::Vararg{Any})
> @ Makie ~/.julia/packages/Makie/4JW9B/src/figureplotting.jl:401
> \[614\] series!(::Axis, ::Vararg{Any}; kw::@Kwargs{labels::Vector{Observable{String}}})
> @ Makie ~/.julia/packages/Makie/4JW9B/src/recipes.jl:521
> \[615\] top-level scope
> @ ~/gnc\_tools/master/test3.jl:7
> \[616\] include(fname::String)
> @ Main ./sysimg.jl:38
> \`\`\`